
def add(x,y):
    return x+y

r=add(3,400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000)
# print(r)

def check(age):
    """
    check()检查年龄
    :param age:传入的参数，代表年龄
    """

    if age>18:
        print("成年")
        return "sucess"
    else:
        return None

result=check(13)
if not result:
    print("返回值",result)